The shortest war on record took place in 1896 when Zanzibar surrendered to Britain after 38 minutes.
In 1997, the US maintained 13,750 nuclear warheads, 5,546 of them on ballistic missiles.
The NATO attack on Serbia in 1999 during the Kosovo war killed more animals than people.
Since 1495, no 25-year period has been without war.
When killed in battle, Japanese officers were promoted to the next highest rank.